MATLAB: Repeating a for loop

loop

Res=input ('Enter the resistance values in ohm,R1 to Rn,values must be positive and real > ');
for i=1:1:n
if  Res(1,i)<0 | imag(Res(1,i))~=0
         Res=input ('Enter the resistance values in ohm,R1 to Rn,values must be positive and real > ');
end
end
how to make this code repeat from the begining from the bigginig if statement is true

Best Answer

n = 4 ; 
for i=1:1:n
  Res(i)=input ('Enter the resistance values in ohm,R1 to Rn,values must be positive and real > ');
  while Res(i)<0
    Res(i)=input ('Enter the resistance values in ohm,R1 to Rn,values must be positive and real > ');
  end
end
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